Network diagnostics,
reimagined live.

A modern app that fuses continuous traceroute with real-time ping into a single live dashboard — per-hop stats, offline geolocation, and full session recording. Available on Windows.

Latest version · MIT licensed

nmtr

Sessions

1.1.1.1 — live

github.com

vpn.corp

8.8.8.8

LIVEcloudflare.com · 1.1.1.114 hops · 1.2k probes

#HostAvgLossTrend

router.lan192.168.1.1

0.8ms0%

isp-gw-0410.0.0.1

2.1ms0%

ams-bb-01172.16.4.22

11.4ms1%

cloudflare.com1.1.1.1

18.7ms3%

What makes nmtr different

04 / Highlights

Parallel ICMP engine

Direct calls into Iphlpapi.dll via FFI probe every TTL simultaneously, with kernel-measured RTT — no shelling out to traceroute.

Per-hop statistics

Live loss %, packet counts, last/avg/best/worst latency, jitter, and a 60-point rolling sparkline for every hop in the route.

Offline geo map

Bundled TopoJSON world map renders each geolocated hop entirely offline. Zero external network requests during a trace.

Route change detection

When a hop's IP shifts mid-session, nmtr marks it on the map and logs the event in a dedicated panel so you can correlate later.

Built with

Engineering

Electron 41

Shell

React 18

UI framework

Zustand

State

koffi FFI

Probing

Ready for the upgrade?

Install nmtr in under a minute. Open source, MIT licensed, and built for people who care about the details.